HIGH-RESOLUTION 2-DIMENSIONAL SHEAR-BAND COMPUTATIONS - IMPERFECTIONSAND MESH DEPENDENCE

Authors
BELYTSCHKO T CHIANG HY PLASKACZ E
Citation
T. Belytschko et al., HIGH-RESOLUTION 2-DIMENSIONAL SHEAR-BAND COMPUTATIONS - IMPERFECTIONSAND MESH DEPENDENCE, Computer methods in applied mechanics and engineering, 119(1-2), 1994, pp. 1-15
Citations number
20
Categorie Soggetti
Computer Application, Chemistry & Engineering",Mechanics,"Engineering, Mechanical","Computer Science Interdisciplinary Applications
Journal title
Computer methods in applied mechanics and engineering → ACNP
ISSN journal
00457825
Volume
119
Issue
1-2
Year of publication
1994
Pages
1 - 15
Database
ISI
SICI code
0045-7825(1994)119:1-2<1:H2SC-I>2.0.ZU;2-R
Abstract
Very fine meshes, up to 64000 elements with 5 to 10 elements across a shear band, are used to study dynamic shear band formation in viscopla stic plane-strain specimens under compression. Imperfections are shown to have a crucial effect on shear band structure; they determine the size and location of the shear band. A transition to a pattern of para llel shear bands is observed when the imperfection is reduced in size. It is also shown that the results are independent of element type or stabilization for early stages of localization but as the band narrows in the latter stages, element size and type have marked effects; this element and mesh dependence is attributed to insufficient resolution.